Runes

Rune	Level	Description	Required Components	Colour
Hrynja, Collapsing	1	As a free action, you can collapse the weapon into a small object that occupies one inventory space, or expand it into the weapon.	A small object, Changeling's philter	Blue
Þísmyssa, Suregrip	1	You may not be unwillingly disarmed of this weapon while wielding it.	Living tree sap, Spider's silk	Yellow
Kílmagntórn, híður, Elemental damage, fire	1	The weapon deals one point of fire damage on a hit.	Spring drake's glands, Elemental oil	Red
Kílmagntórn, hald, Elemental damage, cold	1	The weapon deals one point of cold damage on a hit.	Ice mephit claws, Elemental oil	White
Kílmagntórn, skalðr, Elemental damage, poison	1	The weapon deals one point of poison damage on a hit.	Hemlock extract, Elemental oil	Green
Kílmagntórn, smerjyt, Elemental damage, necrotic	1	The weapon deals one point of necrotic damage on a hit.	Grave dust, Elemental oil	Brown
Lýtturkrafjur, Illuminating	1	As a bonus action, you can cause the weapon to emit bright light in a 20 foot radius and dim light for a further 20 feet until deactivated as a bonus action.	Will-o-the-wisp husk, Ground wellstone	Pale blue
Stynnakrafjur, Stunning	1	On a critical hit, this weapon stuns the target until the beginning of the wielder's next turn	Quicksilver, Ground wellstone	White

Manufacturing

Enkir kept a set of detailed notes with his tools, cataloguing his experiences using the tools: what worked, what didn't, improvements and improvisations. The act of runesmithing requires a magical set of tools, of which only one set are known to exist. Using these tools generally requires a degree of knowledge and experience in blacksmithing, as many of the processes are similar, and a knowledge or working weapons is generally required. More difficult and powerful runes also necessitate a knowledge of the arcane, making them very difficult to produce, as few smiths are trained in the arcane, and few mages are trained in metalworking.

Inventor(s)

Pioneered by the semi-mythical Enkir the Runesmith, this art is only possible through a set of tools stolen from Baðin the craftsman god. Enraged by the theft, Baðin tasked the nafragl, shades from the Hjímnaðnkeim (Shadowfell) to seek and return the tools to him. Enkir spent much of his life hunted by the nafragl, but gained fame and fortune for his legendary weapon enchantments. In the end, his fate was unknown.